Air conditioner



FIG. 1 is a front perspective view of an embodiment of an air conditioner, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design.

The shade lines in the figures show contour and not surface ornamentation. 

CLAIM The ornamental design for an air conditioner, as shown and described. 